NEW
Font size
WorksheetsWater Heating Energy in Australia Quiz
Total questions: 15
Worksheet time: 5mins
A homeowner is deciding between a gas-storage water heater and an electric water heater. If their main concern is energy efficiency, which should they choose and why?
Gas-storage water heater, because it is cheaper per unit
Electric water heater, because it is more efficient due to less heat loss
Gas-storage water heater, because it is easier to install
Electric water heater, because it is more widely available
What is the typical capacity range for the insulated steel storage tanks used in Quick Recovery Systems?
10 – 30 litres
50 – 150 litres
200 – 300 litres
5 – 20 litres
Why are Quick Recovery Systems considered expensive?
They use solar energy
They use day rate electricity
They require frequent maintenance
They are made of plastic
If a household needs a storage tank with a capacity of 100 litres, would a Quick Recovery System be suitable based on the information provided?
Yes, because the capacity range is 50 – 150 litres
No, because the capacity range is 10 – 50 litres
No, because the capacity range is 200 – 300 litres
Yes, because the capacity range is 5 – 20 litres
What is a common characteristic of the initial installation costs for solar energy systems?
They are low and remain low
They are high but become reasonable over time
They are always expensive
They are subsidized by the government
Explain why solar energy is considered a more sustainable alternative compared to traditional heating methods, based on the information provided.
Because it is cheaper to install
Because it reduces CO₂ emissions and greenhouse effects
Because it requires no maintenance
Because it is available everywhere
Which of the following is NOT a characteristic of storage heaters?
Require venting to atmosphere (except gas)
Water stored in same container
Connected directly to mains pressure water
Fitted with pressure relief valve
Why is the amount of hot water available from a storage heater limited?
Because it is limited to the storage capacity of the tank
Because it depends on the weather
Because it is only available at night
Because it is connected to a small pipe
A building is considering installing storage heaters. What factors should be considered regarding the supply and demand of hot water?
The storage capacity of the tank and the demand for hot water at peak times
The color of the heater
The type of flooring in the building
The number of windows in the building
A family complains that their hot water supply sometimes runs out and the temperature changes while using multiple taps. Based on the information provided, what is the most likely cause?
The storage heater is not convenient to install.
The storage heater has a limited amount of hot water and variation in flow and temperature.
The storage heater can only be used at one outlet.
The storage heater provides unlimited hot water.
Compare the initial and ongoing costs of solar water heaters to alternative heating systems. What is a key financial characteristic?
Lower initial cost, higher ongoing costs
Higher initial cost, lower ongoing costs
Both initial and ongoing costs are higher
Both initial and ongoing costs are lower
Which of the following best describes the function of supply pipes in a hot water circulation system?
They take water to the boiler for heating.
They take water from the boiler after heating.
They store water in the cylinder.
They mix hot and cold water.
What is the main reason for ensuring the capacity of a hot water storage cylinder is sufficient?
To allow demand during peak usage.
To reduce the cost of water heating.
To minimize the size of the cylinder.
To increase the temperature of the water.
A building experiences high hot water demand during certain hours. If the hot water storage cylinder is sized only for average usage, what problem might occur?
There may not be enough hot water during peak usage times.
The water will heat up too quickly.
The cylinder will be too large for the space.
The water will be too cold at all times.
Which of the following is a factor to consider when selecting a temperature for a system?
The color of the insulation
Cost of maintenance and delivering the desired temperature
The brand of the equipment
The location of the nearest store
